YAMAHA you should listen to your people
I know this "post" is "off" more than few months but I hope someone from YAMAHA will listen and finally implement this feature in their "Tyros" arrangers.
Mono Legato is essential feature for playing "balkan" music primarily, but it has its own importance in other music types of course.
If someone does not understand what Mono legato means, here is a nice article about that:
https://ask.audio/articles/understanding-mono-legato-mode-in-synth-sample-visI'm from Serbia (Balkan) and I "know" that the main reason why basically no-one in "balkan" who is professional player, plays ONLY tyros keyboards is because of missing mono legato feature.
So what do people who like YAMAHA (tyros) usually do?
They usually buy some additional workstation keyboard that has Mono Legato like (KORG, Yamaha-Motif, TotalSampler (juzisound), etc...)
So they end up with:
* 2 keyboards on each their appearance
* they have to spent a lot more money even though they already had to pay considerable amount of money for their YAMAHA (read: tyros) arranger.
* they have to spend a lot more time to create custom sounds on both keyboards
* they end up with two basically different instruments with two different "sound engines" and they usually have problems to combine both together
* etc...
* Eventually they sell their Tyros and buy KORG (pa4, pa3, ...)
If you do not trust me, just take any of the "Balkan-like" countries: Serbia, Macedonia, Bulgaria, Croatia, Romania, Albania, Turkey etc... and take a look at the professional keyboard players and their keyboards :-)
Why? Well... because YAMAHA "can not" implement Mono legato in tyros!!!
Is it so hard to have a simple ON/OFF switch like "MONO LEGATO: ON/OFF"

They implemented so many different and difficult articulation algorithms for different types of instruments like playing Sax, Clarinet, Strings (quartet), Guitars etc... and they "can't" implement MONO LEGATO :-)
Really? I'm not buying this, sorry YAMAHA.
I really do not understand what really stands behind all of this and why people from YAMAHA are doing this for so many years.
I'm almost 100% sure that mono legato is not implemented in tyros keyboards on purpose.
Is there any other REASONABLE explanation? I don't think so.
Why do I think that? Well, because it is more than obvious.
Just take any YAMAHA workstation: starting from DX7, DX11, SY99,...,MOTIF they ALL HAVE Mono legato or at least fingered portamento that is probably the most similar thing to mono legato + portamento.
Anyway, I hope someone from YAMAHA will actually SEE this and react and finally implement Mono legato and/or portamento in future tyros keyboards.
Also, it would be GREAT if they could implement a HOTFIX to previous tyros OS implementations (tyros 5,4,3,2,1) as a "new feature" but I think this would be to much to ask having in mind that they did not do this originally.
They probably do not maintain OSs for older tyros keyboards any more... to bad

Finally, I know that implementing mono legato and portamento will definitely increase the number of sold Tyros keyboards in ALL countries (especially Balkan) and will help YAMAHA to take the leadership in arrangers market again!
I trust YAMAHA and hope someone will listen

Thanks
Dalibor Aleksov